Why Did World Trade Center 7 Collapse? Gerald Posner Breaks It Down | The Brief
“Jet fuel can’t melt steel beams” became one of the most famous claims in 9/11 conspiracy culture. But did the steel need to melt for the towers — or World Trade Center 7 — to collapse? In this highlight from The Brief, Gerald Posner explains the engineering argument behind the World Trade Center collapses, including […]

